A trough has brought rain to the island, particularly in the interior, west, and northwest, with 3.22 inches of precipitation accumulated in Arecibo. Several flood warnings were issued in the interior and west in the afternoon due to high humidity, the trough, and light wind causing locally heavy downpours. However, there was no significant precipitation for the La Plata River or the Loíza River, which feed the La Plata and Carraízo reservoirs, respectively.
On Wednesday, September 23, the pattern of a calm morning and rainy afternoon with thunderstorms is expected to repeat, with a weak tropical wave arriving on Wednesday.